Work-adjusting means



Aug. 28, 19 28.

, 1,682,472 w. J. BAUMBERGER El AL worm ADJUSTING mums Filed April 26,1926 a Sheets-Sheet 1 INVINTOPS H. /r. w

Aug. 2a, 1928'. 1,682,472

W. J. BAUMBERGER ET AL WORK ADJUSTING MEANS Filed April 26, 1926 s Sheets-Sheet 2 Svw M4 ATTORNEYS Aug. 28, 1928.. 1,682,472

W. J. BAUMBERGER ET AL I WORK ADJUSTING MEANS vFiled April 26, 1926 3Sheets-Sheet 5 INVENTORJ Patented Aug. 28,1928.

UNITED STATES PATENT i:orric s.r

WILLIAM J. nsumwmmt Ann HENRY H. ER DAVENPORT, Iowa, hssrenonsTOQIIIECFRQ 114cm oomr'zi virjor Bnrrnrinoar, rows, ,AQCGRIOLRATION orIOWA.

WORK-ADJUSTING MEANS.

A plican s and April 26,

This invention relates to machine tools and-mole particularly tomeansfor ac'curate 1y disposing work on the work supporting table .otxaninternalgrinding machine or the like.

It has been found desirable that certain types of work be veryaccurately disposed on the work supporting table of a grinding machine.For example, in order to obtain the best'results in grindinglongitudinally aligned cylinders in a pump casingior parallel cylindersin suchpazcasing, it is desirable at such cylinders be disposed outhework porting table in exact parallelism with the worksupporting. tableand with the tool spindle of the grinding machine;

Such pumpcasing's to be ground are frequently. provided with basesupports, by means" of which supports the casing rests upon the worksupporting. table. frequently happens-however, that such basesupportsare slightl unevenor non-un form; Due to suchwirregu ariti'es.inn-the'apnmp oasing itself, it has-:been difficult n the past telaccurately dispose ax-pum casing directly onqt'he worksuonorting tabexit a grinding machine or the grinding of the cylinders thereof. Theimportance of grinding such cylinders so that the axostthereof arefllnaccurate relation :to each;- other .will be apprecia'ted .fr'omhthe factthat the more accurate the grinding of the cylinders, the greater is ithe operatingjefiici'ency and longe vity o t a pump,for,example;of whichthe as ng forms a part:

An object oft-hiszinvention is to provide means foraccurately disposingwork ;1ndesired posit-ion on a work supportingtable.

Another-objectof the invention is toprovide means for disposing. workhaving an internal cylindrical surface :to. be ground in accurateposition on the work supporting tablejofua grinding 'imachine" withtheaxis of suehcylinder parallel-Ito the worksupporting table and tofthegrinding wheclspmdle..

Afurther object of the invention-is to i provide meansforaccuratelypositioning a a pump casing having longitudinally alignedand parallel cylinders adjacenta grinding wheel; spindle, wherebysaidcylinders may be suceessively disposed in" accurate and J alignedrelation to said spindle. V,

1926; semi No. 104,559.

Another object of thisinvention is to pro- .viderea'dily adjustablemeans for disposing work in desired position on a work supportmg tableand for maintaining said workin i-np; wheel spindle by meanscontemplated by this invention;

I F g. 2 1s a perspective view of a-pump cas ng having parallel" andlongitudinallv aligned cylinders,. said casing being disposed -1Hdesired relation .on a work supporting tableby. means contemplated bythe invent1on; 1 f

Fig. 3 is an elevation, partly insection, showingadjustable means for:moving the work verticallyand laterallyto dispose said workindesireduposition on :a work supportiug table.- and means for maintainingthe .work in saiddesired position;

Fig. 4' is {a plan; view of the structure shown n'F1g.3;'

Fig. 5 is a O ig. 4;; i V lfig. dis a vertical sectionon-line 6-'6 ofFlgair i Fig. 7 is a perspective view of a clamp member formaintainingthe Work indesircd pos tion; g

i". 8'is a plan view of a bracket adapted to cooperate with :laterallymovable means for moving work laterally; l

Fig. '9 isa frontelevation of the bracket shown in Fig. 8; f i Fig. 10is a vertical section of a jack for adjusting the work vertically; and'Fiq. lliis a'bottomrplan view, of the jack ehownin Fig-10'. V a

vertical section on line 5+-5 In Fig. 1 is shownan internal grindingmachine 1 wliiclrmay be of usual construction but is preferably of theconstruction shown in application Serial No; 730,626, filed tatediaboutitsown axis and orbitallyabout I an axis eccentric to its own. The pumpfixture or other work 3 to be ground is shown as disposed on ahorizontal work supporting table 1 and thereby brought into cooperativerelation with the grinding wheel 5 mounted at the outer end of thespindle 2. The work support ng table 1 is adapted to be movedlongitudinally of the grinding machine and of the grinding wheelspindle, laterally thereof, and may be revolved by associated mechanismshown in Fig. 1 and more particularly disclosed in the copendingapplication of H. H. Yerk and \V. J. Baumberger, Scr'al No. 15,050 liledMarch 12, 1925. Thus on the longitiulinally mo *able and reciprocablecarrier bed 6 is disposed a pivotally mounted base member 7, on whichmember 7 is mounted a frame 8 sl'dable laterally or transvcriely ot' thegrinding machine upon said member 7 by turning the crank 11. The "arrierbed 6 is reciprocable long'tudinally oi the machine by hand or automaticmeans commonly associated with machines of this character. By mechanism9 including suitable eams (not shown) the work supporting table '1 maybe moved vertically with respect to the grinding machine and thegrinding wheel spindle 2, said mechanism being operated by turning thecrank 12. By releasing a latch 10, the base member 7 may be revolved,whereby the opposite side of the work 3 may be presented to the grindingwheel 5.

As has been previously mentioned, the base supports oi the work 3 arenot always uniform or even, so that when such supports are d sposeddirectly on a work supporting table l, the axes of the cylinders of thepump casing are frequently not parallel with the table 4t and with thespindle 2. This invention contemplates means whereby a pump casing orother work may be accurately disposed on a. work supporting tableregardless of the degree of irregularity of the base supports 13 of suchwork.

\Ve have provided by the jacks 1-1 independently operable means, wherebyportions of the work 3 may be independently moved vertically withrespect to the work supporting table 1- to the end that, in the pumpcasing illustrated in the drawings, the pump cylinders may be disposedwith all of their axes parallel to the work suporting table t andparallel to the tool spindle 2. The jacks 14 may be of any suitableconstruction, and a re each shown as comprising an externally threadedelevating screw 15 and an internally threaded elevating nut 16.Preferably, the screw 15 is provided at its lower end with dowels 17adapted to cooperate with apertures 18 in the work supporting table 4,whereby sa d screw may be prevented from rotation and from translatory,or bodily, movement on said table. The nut 16 may be provided withdepressions 19 with which a suitable tool (not shown) may be employed torotate said nut to move the work vertically.

The work 3 is engaged by the top 16 (Fig. of each nut 1G. in order thatsubstantially the entire top 16 may engage the work, regardless ofnon-parallelism of the work 3 on the work supporting table 1-, the baseof the screw 15, which rests directly on the table 1, is preferablyrounded, whereby the longitudinal axis of the jack 1 1 may be maintainedperpendicular to the adjacent portion of the work 3 and thereby a largearea of contact obtained between the top 16 and the work 3. Theapertures 18 are preferably sullicicntly large to permit such lim Etedpivotal movement of the jacks 14 about the bases 15, the clearancenecessary for such pivotal movement being, however; relatively so smallthat such clearance is not shown in Figs. 3, 4; and

Any suitable number of jacks 11 may be employed. depending on the natureand construction of the work 3. In the case of the particular pumpcasing 3 the drawings, it has been found convenie to dispose a jack 1 1under each of the four supports 13.

We have also provided means for adjusting the work laterally. Thus wehave provided the centering brackets E20 which may be disposed on thework supporting, table and which are provided with bosses 21, throughwhich are shown extending a plurality of threaded horizontal apertures'lheapertures 22 are adapted to receive adjusting screws 23 providedwith suitable knobs 24. The brackets :20 may be maintained in rigidposition upon the work supporting: table 1 by means of shouldered bolts2?, slidablc in the grooves 26 and engaginv the upper surface :27 ofsaid grooves: Th shouldered bolts extend through slotted apertures 33 inthe brackets {UNTCOOPCItIlQ with nuts 28 to maintain the brackets inrigid position with the bosses 21 adjacent the respective base supports1 The bolts 25 may be prevented from turning by how; 29 engaging inslots in the apertures lit-l add in the bolts It will be seen that byturning the knob 21 the work may be moved laterally. The adjusting:scrcws '23 may be disposed in the aperture most convenient to cooperatewith the particular work to be adjuz-gted. While the brackets 20 areshown as extending longitudinally of the work supporting table andgrinding machine, it will be understood that said brackets may, ifdesired. be disposed transversely thereof, depending on the particular.work to be mounted and the convenience of operation in any partirularcase. The bosses 21 are shown as raised so that. the adjusting screwsmay more readily engage with the supports 13.

illustrated ,i i

Hit

sesame We have also" showm-:awconvonient clamp,

mg means which m be:-madijly employed to firm ly lock the work in thedesired ,position attained by the above described means for moving thework vertically and lateral-- 1y; This clamping means is shown ascomprising a clamp bar 30 having apertures disposed to cooperate withthe bolts 25, the

be employed to firmly maintain the clamp bars 30 in position. a I

To assist in accurately dispos ng a pump casing 3 orthe likeupon theworksupporting table 4 with the cylinders thereof in alignment with thegrindingwheel spindle 2, centering means may be provided remote from thegrinding'wheel spindle. Thus, the standard 36'entends upwardly from thecarrierbed G; A longitudinally disposed rotatable shaft 37, whichissupported by the standard36, cari'iesan adjustable radial mdicator arm38, whiclrmay'be employed'to properlyvcenter the end of the pumpcylinder remote from the grinding Wheel spindle. The pump'cylinderadjacent to the gr nding wheel spindle may be centered by slowly moving.the grinding wheel spindle about itsorbital axis or by removing thegrinding wheel 5 and substitutingtherefor a suitable indicatorarm39(Fig-2) similar to the arm 38. To align the cylinders ofapump casingwith the -grinding"wheel spindle, the pump :casing; 3 may bemovedvertically and laterally by turning the-cranks. 12 and 11 respectivelyand tliesfinal 'adjustment-to correct for irregularitiesin'thebasesupports 13- may be readily-and accurately made by 1 the above-describedmeans contemplated our invention:

"It will" thus be seen that we haveprovide'd V a simple, yet effective,combination of parts,

, whereby work of irregular shape or structure may beaccurately-disposed and maintained in desired position on the worksupporting table of a macliinetoolmechanism in desired relation to thetoolfspindlethfle tableito 1nd ivldually vertically ad ust at least of;j g

It will furthermoreibe understood that by means contemplated by ourPI'BSLIIt'lDVGIIT tion, the machining r grinding of work maybe much moreaccurately accomplished,

than heretofore. ofstructuresrcomprising aligned cylinders,

Furthermore, inthe case such cylinders may be machined or ground each"in accurate alignment withvthe other,

thereby deriving-1nanybenefits where such accurate alignmentisespecially desirable.

Furthermore, it is .to be understood that the particular forms ofapparatus shown anddescribed are presented for purposes of enplan-ati'onandiil-lustration andthat vari-,

oils of said apparatus can be made without departing from our inventionas defined. in the appended claims.

What we claim is: 1; The combination: with. a grinding machineliaving.a...carrier bed, a. grinding wheel spindlerotatable about itsown axis and in an orbitwl pathabout. an axis eccentric to its own, andmeans for causing relative reciprocaition between said carrier bed andspindle longitudinally of said: spindle, of meanssfordisposing workhaving a cylinder to be groundin desired cooperative relation to saidgrinding iwlieel spindle, said means comprising a work; supporting tablemounteduon said carrier bed and arranged t0carrysaidwork, pivotalsupporting means for swinging said table in a horizontal planetovpredetermined desired rotative positions, nieansi-or adjusting saidtable in a horizontal plane transversely of the grinding wheel. spindle,independent means mounted on said work supporting table adjacent opposed:sides of work 'to adjust the'work latera-11y on said'table,andgindependent adjust able means onssaidtable to individually ver;tically adjust at least three spaced portions ofnsaid work wit'hrespect'to saidtable.

- 2. The combination with a grinding machine having acarrier bed, agrinding Wheel spindle rotatable about itsown axis and in an orbitalpath about an axis eccentric to its own, and means for causing relativereciprocation between said carrier bed and spindle longitudinally ofsaid spindle, of-

meansfor disposing work having a cylinder f to be groundin desiredcooeprative relation to' said grinding wheel spindle, said meanscomprising a work supporting table mounted on said carrier bed andarranged'to carry iii!) said work, pivotal supporting means forswinging-saidtablein a horizontal plane to predetermined desiredrotative position, means for adjusting said table in a horizontal planetransversely of the grinding wheel 5 indle, means f'or adjustin saidtable vertical, said means being arranged to maintain said table indesired vertically adjusted'positionduring a grinding operation,

and independent adjustable means on said dle longitudinally of saidspindle,of meansv for disposing work having a cylinder to be ground Y1ndesired cooperative relation to said grinding wheel spindle, said means"comprising a work supporting mounted on saidcarrier bed and arrangedtable to carry said work, pivotal supporting means for swinging saidtable in a horizontal plane to set positions spaced 180 degrees apart,means for adjusting said table in a horizontal plane transversely of thegrinding wheel spindle, means for adjusting said table vertically, saidmeans being arranged to maintain said table in desired verticallyadjusted position during a grinding operation, independent means mountedon said work supporting table adjacent opposed sides of said work toadjust the work laterally on said table, and independent adjustablemeans on said table to individually vertically adjust at least threespaced portions of said work with respect to said table.

4. The combination with a machine tool having an adjustable worksupporting table, of means for readily and accurately disposing andmaintaining work in desired position on said table, said meanscomprlsing in combination, at least three individually verticallyadjustable jacks cooperable with spaced portions of work adjacentopposed sides thereof, said jacks being removably stcurcd to said tableand disposed on said table intermediate said table and work, clampingbars arranged to cooperate with spaced portions of said work adjacentopposed sides thereof, and means removably secured to said tablearranged to hold said clamping bars securely against said work inadjusted position.

5. The combination with a machine tool having an adjustable worksupporting table. oi means for readily and accuately disposing andmaintaining work in desiltd position on said table, said meanscomprising. in combination, brackets disposed on said table adjacentopposed sides of the work to be operated upon, means for removablysecuring said brackets to said table, means carried by said brackets forcooperating with portions of said work to individually move saidportions for adjustment laterally of said table, clamping bars carriedby said means securing said brackets to the table, said clamping barsbeing arranged to cooperate with said work adjacent the portions engagedby the lateral adjusting means, means for holding said clamping barssecurely against said work in adjusted position. each set of clampingbars and brackets being ltlllOYtllJlQ together from said work supportingtable.

(3. The combination with a machine tool having an adjustable worksupporting table, of means for readily and accurately disposing andmaintaining work in desired position on said table, said meanscomprising, in combination. at least three individually verticallyadjustable jacks disposed on and removably secured to said table anddisposed intermediate said table and spaced portions of the work,brackets disposed on said table adjacent opposed sides of the work,means for rcn'lovably securing said brackets to said table, meanscarried by said brackets for cooperating with portions of said work toindividually move said portions for adjust ment laterally of said table,clamping bars carried by said means securing said brackets to the table,said clamping bars being arranged to cooperate with said work adjacentthe portions engaged by the lateral adjusting means, means for holdingsaid clamping bars securely against said work in adjusted position. eachset of clamping bars and brackets being removable together from saidwork supporting table.

7. The method of grinding the interior walls of a casing containing apair 01 longitudinally disposed cylinders to obtain longitudinallyaligned cylindrical surfaces having a desired common axis. by grindinwheel rotatable on its own horizontal axis and orbitally about ahorizontal axis eccentric to its own, which method comprises disposingsaid casing on a support; adjacent said grinding wheel, bodily adjustingsaid support and easing longitudinally and laterally of the grindingwheel spindle to approximately dispose said cylinders with the desiredcommon axis of the surfaces to be ground in lolm itudinal alignment withsaid eccentric axis, independently adjusting spaced portions of saidcasing vertically and horizontally with respect to said support toaccurately position said desired common axis with respectto theeccentric axis of the spindle, grinding the cylinder adjacent thegrinding wheel, swinging the support in a horizontal plane through 180degrees, and grinding the other cylinder.

8. The method of grinding the interior walls of a casing containing apair of longitudinally disposed cylinders to obtain longitudinallyaligned cylindrical surfaces having a desired common axis, by a grindingwheel rotatable about its own horizontal axis and orbitally about ahorizontal axis eccentric to its own. the ends of said cylinders at theouter ends of said casing being suitably marked to indicate the positionof said desired common axis, which method comprises disposing saidcasing on a support adjacent said grinding wheel. bodily adjusting saidsupport and easing laterally and vertically to approximately disposesaid cylinders with the desired common axis of the surfaces to beground, as indicated by said markings on said cylinders, in longitudinalalignment with spaced indicators carried by the machine indicating theaxis of orbital movement of said grinding wheel, independently adjustingspaced portions of said casing verti- "ally with respect to said supportto accurately position said desired common axis of said cylinders withrespect to said indicated eccentric axis of the spindle, grinding loothe cylinder adjacent the grinding wheel, swinging the support in ahorizontal plane through 180 degrees, and grinding the other cylinder.

9. The method of grinding the interior walls of a casing containing apair of longitudinally disposed cylinders to obtain longitudinallyaligned cylindrical surfaces having a desired common axis, by a grindingwheel rotatable about its own horizontal axis and orbitally about ahorizontal axis eccentric to its own,'the ends of said cylinders at theouter ends of said casing being suitably marked to indicate the positionof said desired common axis, which method comprises disposing saidcasing on a support adjacent said grinding wheel, bodily adjusting saidsupport and casing laterally and vertically to approximately disposesaid cylinders with the desired common axis of the surfaces to beground, as indicated by said markings on said cylinders, in longitudinalalignment with said eccentric axis, independently adjusting spacedportions of said casing vertically and horizontally with respect to saidsupport to accurately position said desired common axis of saidcylinders with respect to said eccentric axis of the spindle, andgrinding said cylinders.

10. The method of grinding't'he interior walls of a casing containing apair of longitudinally disposed cylinders to obtain longitudinallyaligned cylindrical surfaces having a desired common axis, by a grindingwheel rotatable on its own horizontal axis and orbit-ally aboutahorizontal axis eccentric to its own, which method comprises disposingsaid casing on a support adja cent'said grinding wheel, bodily adjustingsaid support and casing longitudinally and laterally of the grindingwheel spindle to approximately dispose said cylinders with the desiredcommon axis of the surfaces to be ground in longitudinal alignment withsaid eccentric axis, independently ad usting spaced portions of saidcasing horizontally its own, and means for causing relative re-iciprocation between said carrier bed and spindle longitudinally of saidspindle, of means for disposing work having a cylinder to be grounddesired cooperative relation to said grinding wheel spindle, said meanscomprising a work supporting table mounted on said carrier bed andarranged to carry said work, pivotal supporting means for swinging saidtable in a horizontal plane to predetermined desired rotative positions,means for moving saidtable in ahorizontal plane transversely of thegrinding Wheel spindle, and independent means mounted on said worksupporting table at each end portion of the work to adjust the ends ofsaid work laterally, whereby said work may be disposed with the axis ofthe cylinder to be ground therein in accurate longitudinal alignmentwith the axis of the grinding wheel spindle.

In testimony whereof we aflix our signatures.

WILLIAM J. BAUMBERGER.

HENRY H. YERK.

